Downton Abbey — the manor — is used to hosting visitors, but the set had one of its highest-profile guests this week when Catherine, the Duchess of Cambridge, stopped by Ealing Studios in London for a tour and meet and greet. Downton Abbey attracts an audience of around 120 million worldwide. Her Royal Highness toured the studio home and also met Downton ‘s own little George–the son of Mary and Matthew– who gave the royal a toy train for her son.